baber/WOPTO huggingface dataset:
Patent GB-1435136-A (GB)
Title: Method of machining a fixing slot in a fixed blade for an axial- flow turbomachine
IPC: F01D5/30
Filed: 1973-08-14
Abstract: 1435136 Milling turbine blades BBC BROWN BOVERI & CO Ltd 14 Aug 1973 [16 Aug 1972] 38384/73 Heading B3K [Also in Division F1] A turbine blade 1 is provided with a slot 2, 3, which is engaged by a tongue to secure the blade to the turbine rotor or housing, the slot being of arcuate form with a mean radius of curvature R N  extending from the axis 4 of rotation of the turbine rotor. The slot is machined in the blade root by a form side milling cutter whereby the slot 5 is formed with one side extending obliquely at an angle a to the axis of the rotor and forming a frusto-conical surface 7 about said axis. The angle a is not less than Where D Fr  is the diameter of the cutter. The above relationship gives the minimum angle a to prevent undercutting of the slot.
Patent GB-830941-A (GB)
Title: Article coating
IPC: B65G49/04
Filed: 1956-12-20
Abstract: <PICT:0830941/III/1> An apparatus for coating articles 51 comprises a container 13 for a coating liquid, a support 45 for the articles 51 arranged in the container 13 for rotation about a vertical axis, fixed means 40 immediately above the support 45 affording a spiral path of travel for the articles 51 on the support 45 from the centre to the periphery thereof during rotation, and means, e.g. a motor 12 and transmission 26 ... 28, for rotating the support 45.  The support 45 is suspended by brackets 44 from a rotatable sleeve 17 carried by a bearing 25.  Cylindrical articles 51 are delivered sequentially to the support 45, rotation of which moves them longitudinally through a spiral path and simultaneously causes them to roll about their longitudinal axes, a rubber belt conveyer 55 taking them out of the container 13.
Patent GB-1471897-A (GB)
Title: Monoesters and diesters of dihydroxybenzenesulphonic acid
IPC: C07D295/02
Filed: 1974-09-05
Abstract: 1471897 Mono- and di-esters of dihydroxybenzenesulphonic acid LABORATORIOS DEL DR ESTEVE SA 5 Sept 1974 [11 Sept 1973] 38895/74 Addition to 1418358 Heading C2C The invention comprises the following compounds:- morpholine, piperazine and piperidine 2,5 - dihydroxybenzenesulphonate monotosylates, diethylamine and sodium 2,5- dihydroxybenzenesulphonate, dibenzoates, morpholine, piperazine and piperidine 2,5- dihydroxybenzenesulphonate dibenzoates and piperazine bis-(2,5-dihydroxybenzenesulphonate monotosylate) and piperazine bis-(2,5-dihydroxybenzenesulphonate dibenzoate). They are made by reacting pyridine 2,5-dihydroxybenzenesulphonate monotosylate or dibenzoate with the appropriate base. Pharmaceutical preparations having hypolipemic action contain the said compound(s) as active ingredient. Administration is, e.g. orally.
Patent GB-1300472-A (GB)
Title: Improvements in or relating to evaporation plant
Inventor: TAYLOR DENIS
IPC: B01D1/26
Filed: 1970-08-12
Abstract: 1300472 Evaporation plant; concentration of distillers spent wash APV CO Ltd 16 July 1971 [12 Aug 1970] 38953/70 Heading BIB Distillers spent wash, or other liquor which contains dissolved solids, is concentrated by evaporation in a series of primary evaporation stages A1, A2, A3, and two further evaporator stages Cl, C2; there also being connected, between stages A1 and A2, an evaporator B which is operated under pressure and heated by live steam (e.g. at 120 psi) supplied through line 19 and a thermo-compressor 21 which entrains some of the vapour evolved from the liquor as it flows through evaporator B, that portion of the vapour not entrained by compressor 21 being passed through line 24 for use as heating-medium in stages C1 and C2. In the plant shown, stages A1 A2, A3 are associated with mechanical compressors for the vapour; and the compressed vapours are used for heating these stages. Stages C1 and C2 may be plate-type evaporators. Distillers spent wash containing 1.4% dissolved solids is pumped through line 2 to evaporator Al; and the final concentrate containing 30% solids is withdrawn from evaporator C2 and separator 53 by pump 54. Evaporator Al is operated by compressor 8. The uncondensed vapours and the condensate leaving the heating elements of Al pass to separator 11. The separated vapour flows through line 14 and may be used to preheat the feed liquor. Similarly the separated condensate (together with that from stages B, A2 and A3) in line 13 may be used in a preheating heat exchanger, and constitutes a supply of soft water. Part of the liquor withdrawn from each of the stages A1, B, A2, A3, is recycled to the stage from which it is withdrawn, and the remainder is passed to the succeeding stage. Evaporators A2 and A3 are operated by a single compressor 33.
Patent GB-1090168-A (GB)
Title: Apparatus for handling closure caps
IPC: B67B3/064
Filed: 1966-09-01
Abstract: 1,090,168. Orienting caps. CONTINENTAL CAN CO. Sept. 1, 1966 [Oct. 22, 1965], No. 39031/66. Heading B8S. Caps C falling down shoot 10 are checked for orientation and lack of distortion by gauge 18. The bottom of the shoot is formed with a trap door 26 carried by shaft 27 operated by arm 31, pin-and-slot 32, 33, and bar 34 operated by cylinder 45. Additionally stop 40 carried by arm 37 guided by shaft 36 is operated by bar 34 via spring 47. A switch 55 is provided in the shoot above the gauge 18 and a switch 56 is provided in the shoot below the gauge 18. Operation.-The caps C normally slide down shoot 10 and pass through gauge 18 and continue their descent down shoot 10. However, if one of the caps is deformed or wrongly oriented, it fails to enter gauge 18. The switch 56 then operates cylinder 45 to move the bar 34. This effects two things, it lowers the trap door 26 to allow the distorted cap to fall therethrough. Secondly it moves the stop 40 into the shoot to prevent the oncome of the next caps. A timer resets the apparatus.
Patent GB-1357774-A (GB)
Title: Manufacturing display screens for  cathode-ray tubes
IPC: G03F7/04
Filed: 1972-08-23
Abstract: 1357774 Photo-resist materials PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 23 Aug 1972 [26 Aug 1971] 39229/72 Heading G2C [Also in Division H1] In the manufacture of a black matrix for a colour television screen by exposure of a photoresist through a shadow mask, the resist comprises a polyvinyl alcohol having a mean molecular weight of about 128000, a degree of hydrolysis of 87% to 89% and a single - peaked molecular weight distribution having a maximum at about 132000, about 40% by weight having a molecular weight between 120000 and 154000; and after development the image is fixed by treatment with acetone which may be mixed with up to 20% by volume of water. In one example a faceplate is coated with an aqueous solution of 3.5% pva (as defined above) and 0.115% ammonium dichromate which is dried by infrared heating and by the passage of a stream of dry air. After exposure through a shadow mask the image is developed by spraying with water at 0. 3 atmosphere pressure for 90 seconds; starting in the last second of the development the screen is sprayed with acetone at 0. 2 atmosphere pressure for 5 seconds, and the screen is dried as before. The screen is then coated with a graphite suspension, and the pva dots with the overlying graphite are removed with hydrogen peroxide to leave apertures of even size with smooth edges  in which phosphors are subsequently deposited. In a modification the image is developed with ammonium dichromate solution instead of water, and after treatment with acetone is exposed again without the shadow mask; subsequently the screen is sprayed with water for 30 seconds to remove ammonium dichromate crystals and is spindried. Alternative sensitizers for the pva comprise alkali metal dichromates, tetraalkylammonium dichromate, and trialkylaralkylammonium dichromate, and the photo-sensitive material may also contain dipolar aprotic substances such as dimethylsulfoxide, N-methyl- α pyrolidone, Y-butyrolacetone, ethylene glycol carbonate, sulfolane, dimethylacetamide, dimethylformamide, hexamethylphosphoramide, and tetramethyl urea, and bases such as tetraalkylammonium hydroxide.
Patent GB-847616-A (GB)
Title: Improvements in jet propelled aircraft
IPC: B64C23/00
Filed: 1956-12-27
Abstract: 847,616. Controlling jet-propelled aircraft. POUIT, R. Dec. 27, 1956 [Dec. 29, 1955], No. 39361/56. Class 4. [Also in Group XXVI] In an aircraft powered by at least one pair of jet-propulsion engines, an auxiliary propulsion nozzle is provided on each side of the aircraft so that in the event of failure of one engine, the auxiliary nozzle on that side of the aircraft may be supplied by the operative engine on the other side to maintain symmetrical thrusts about the longitudinal axis of the aircraft. When both or all engines are operating, propulsive gases may be fed to spanwise extending slots at the trailing edges of the wings, such slots being capable of downward deflection to increase lift. Engines 1 1  and lz are mounted in the wings 2. For engine 1 1 , it comprises a turbine 4 1  driving a relatively low pressure axial flow compressor 6 1  and a high pressure centrifugal compressor 9 1 , the former delivering air to a chamber 8<SP>1</SP> and the latter to combustion chambers 10 1  to supply a main propulsion nozzle 12<SP>1</SP>. The chamber 8<SP>1</SP> and, for engine 1<SP>2</SP>, chamber 8 2  connect to conduits 20<SP>1</SP> and 20<SP>2</SP> respectively extending through the wings and also connect to a central chamber 16 which extends into ducts 17 1  and 17 2  provided with normally closed valves 18 1  and 18 2 , which ducts terminate in annular auxiliary nozzles 14 1  and 14 2  surrounding the main nozzles 12 1  and 12 2 . In the event of failure of, say engine 1 2 , the air intake to the engine is closed by mechanism not shown and valve 18z is opened to supply pressure air to burners 15 2  in nozzle 14 2  whereby an auxiliary propulsive jet is created to balance the jet from the opposite main nozzle 12 1 . The air in ducts 20 1  and 20z, indicated by reference 20 in Fig. 2, is exhausted through a spanwise slot 23 to the interior of a wing trailing edge flap comprising an upper element 28 and a lower element 25 which form a propulsive slot 29. Suction slots 34 for boundary layer control communicate with the interior of the flap through ducts 35. Duct 20 and element 25 rotate about a pivot 24 and element 28 rotates about a pivot 30, the two elements being connected by linkwork so that when the flap is lowered the slot 29 increases in size, the downwardly directed jet therefrom increasing the wing lift. The duct 20 houses a feed pipe 36 supplied with hot gases from the main propulsive jet by apparatus consisting of a dividing panel within the nozzle which forms an upper chamber 38 and a lower chamber 37. Gearing 43, 44 operates flaps 40, 41 such that the upper chamber is closed thereby forcing gases through pipe 36 the gas from the lower chamber being deflected downwardly to provide a lifting force.
Patent GB-1172351-A (GB)
Title: Transmission System for Locomotives or like Vehicles
Inventor: BARR ROBERT
IPC: B61C17/12
Filed: 1965-09-15
Abstract: 1,172,351. Controlling vehicles. HUDSWELL, CLARKE & CO. Ltd. 15 Dec., 1966 [15 Sept., 1965], No. 39382/65. Heading B7H. [Also in Division F2] A control system in a mining locomotive or motor road vehicle driven by an I.C. engine through variable-ratio hydrostatic gearing comprises a pneumatic ram 18 connected to the engine throttle, a pneumatic ram 14 connected to the ratio adjusting means of the hydrostatic gearing, and a control valve assembly for supplying air at variable pressure to the rams 14, 18 to effect simultaneous control of throttle position and transmission ratio. The control valve assembly includes a main valve 10 which is actuated by a handle 42 and supplies air to both rams 14, 18 in parallel, and a subsidiary valve 34 which is connected between the main valve 10 and the throttle ram 18 only and is actuated by a trigger 36 mounted on the handle 42 so as to be operable simultaneously with and by the same hand which controls the main valve 10. Air at the pressure determined by the main valve 10 is supplied to the throttle ram 18 simultaneously with the transmission control ram 14 provided that the trigger 36 is depressed. An engine-driven compressor 2 feeds a reservoir 4 which supplies the main valve 10 through an air line 6 and a lubricator and filter unit 8. The transmission control ram 14 is linked to cam means controlling operation of rams for positioning the swash-plate of a hydrostatic pump, and is biased by spring means 28 into a central neutral position. A direction selector control 24 exhausts or pressurizes respective opposite ends of the ram 14. The throttle ram 18 includes a return spring 40 arranged such that air pressure moves the throttle ram 14 slightly in advance of the transmission control ram 14 to avoid stalling. Shuttle valves 20, 38 provide for driving of the vehicle by duplicate controls at the other end of the vehicle. During tandem or multiple vehicle operations the air line 6 and lines 44, 46, 48 connected to the rams 14, 18 are coupled between adjacent vehicles, and a stop cock 22 prevents air loss through the unused main valves 10.
Patent GB-1503055-A (GB)
Title: Tubing coupling
IPC: F16L27/12
Filed: 1976-09-23
Abstract: 1503055 Pipe couplings DELAVAL TURBINE Inc 23 Sept 1976 [17 Dec 1975] 39476/76 Heading F2G In a coupling for joining tubes 18, 19 each having a ferrule 10 or 11 with an annular seal 12 or 13 and a band 14 positioned about the ferrules in sealing engagement with the seals, assembly is effected by a two-part retainer 15 which has flanges 43, 44 for engaging the ferrules and a resilient electrical conductor 42 in at least one of the parts adapted to engage each of the ferrules when the retainer is in position. The ferrule may be formed integral with its tube or welded, brazed, roll swaged or machined thereon. The conductor is in the form of a U- shaped flexible wire and the retainer 15 is a hinged split ring held in place by a catch for details of which the Specification should be referred to.
Patent GB-934183-A (GB)
Title: Improvements in or relating to image transmitting screens
IPC: H01J29/24
Filed: 1959-11-20
Abstract: 934,183. Cathode-ray tubes; luminescent screens. AMERICAN OPTICAL CO. Nov. 20, 1959 [Dec. 12, 1958], No. 39487/59. Class 39 (1). [Also in Group XX] A screen for a cathode-ray tube, or a solid state image intensifier, comprises a bundle of light-conducting fibres 28, Fig. 7, each having one end separated from a phosphor layer by a transparent layer having a lower index of refraction than the fibres. The fibres 28 may have circumferential coatings 33 of material having a refractive index which is preferably intermediate those of the fibres and said transparent layer and may also have outer circumferential coatings of opaque material, e.g. aluminium, silver or indium. Both circumferential coatings may extend over the edges of the end layers or alternatively these layers may be continuous over the entire screen. The fibres may be of glass or clear plastic and dimensions are given. They may be fused together or cemented with methyl methacrylate, indium, lead or epoxy resins. The screen may constitute the face-plate of a cathode-ray tube, a photographic plate being placed in contact with the outer ends of the fibres. In an image dissector the fibres may be splayed out so that their inner ends lie on a circle or a plurality of lines while their outer ends lie on a single straight line. In a solid state image intensifier comprising photo-conductive layer 39, Fig. 10, the transparent layer 32 between fibres 28 and electroluminescent layer 40 is electrically conductive. The fibres may be of quartz or sapphire for ultra-violet transmission and of quartz, sapphire, arsenic trisulphide, or silver chloride for infra-red transmission.
Patent GB-1101379-A (GB)
Title: Improvements in or relating to gas purification
Inventor: SIMPSON PETER
IPC: C01C1/247
Filed: 1964-09-29
Abstract: Hydrogen cyanide is removed from coke-oven gas by reacting the hydrogen cyanide with ammonia, hydrogen sulphide, sulphur and water, and reacting the reaction product with sulphuric acid under pressure. It is believed that the following chemical reactions take place: (1) 2NH4OH+H2S+(x - 1)S --> (NH4)2Sx 2H2O; (2) (NH4)2Sx+2HCN --> 2NH4CNS+ H2S+(x-3)S; (3)NH4CNS+2H2O+H2SO4--> (NH4)2SO4+CO2+H2S.  The coke-oven ga in addition to containing the hydrogen cyanide also generally contains quantities of hydrogen sulphide and ammonia and all that is required for the removal of the hydrogen cyanide is to scrub the gas with an aqueous suspension of sulphur.  Quantities of recycled ammonia and hydrogen sulphide can be added to the gas prior to scrubbing.  Part of the sulphur used in the scrubbing is that recycled from the residual scrubbing liquor and part is that recovered from the hydrogen sulphide remaining in the coke-oven gas after the removal of the hydrogen cyanide.  The latter is effected by contacting the hydrogen sulphide with an aqueous alkaline solution comprising sodium salts of anthraquinone disulphonic acids and sodium vanadate, aerating the solution and separating an aqueous sulphur paste from the solution.
Patent GB-923629-A (GB)
Title: Improvements in or relating to the ribbon feed mechanism of typewriters
IPC: B41J33/518
Filed: 1960-11-18
Abstract: 923,629. Ink-ribbon mechanisms. E. V. BYERS. Sept. 27, 1961 [Nov. 18, 1960], No. 39630/60. Class 100 (4). The ink-ribbon feed mechanism in Fig. 2 comprises an arcuately shaped triangular cam 3, which may be secured to an axle 1, driven from a carriage escapement wheel 2 (Fig. 1, not shown), or driven by the axle through a freewheel clutch 4 (Fig. 1, not shown), the cam reciprocating two links 7 and 8 by engaging two abutments 15, 16 and 17, 18 on the links 7 and 8 respectively, the reciprocating motion being transferred to ratchet-wheels 21, by pawls 24 on detents 22, provided on the links 7 and 8, and which are movable into and out of operative positions by cams 25 and adapted when in their operative positions to rotate step-by-step the ratchet-wheels 21, secured on axles 9 and 10 of ribbon spools 11 and 12 (not shown), respectively. The ribbon feed reversing cams 25 provided in association with the detents 22 are interconnected by a reversing link 27, so that both cams and one arm 26 are connected to a manually-operated lever 28, the cams being so arranged that when one detent is in operation, the other detent is held by its cam in an inoperative position and vice versa, the change in direction of the ribbon feed being initiated by a visual indicator, such as a clip or staple, provided on the ribbon.
Patent GB-1018636-A (GB)
Title: Improvements in or relating to optical memories
IPC: G11C13/04
Filed: 1964-09-30
Abstract: 1,018,636. Electric digital data-storage. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 30, 1964 [Oct. 25, 1963], No. 39737/64. Heading G4C. An optical memory comprises a plurality of optical paths, each including in succession a first electro-optic element adapted to display electro-optic remanence, a first analyser for excluding radiation not having a first predetermined polarization, a second electro-optic element adapted to change the polarization of radiation to a second predetermined polarization when activated, and a second analyser for excluding radiation not having said second predetermined polarization and feeding photoresponsive means. The optical paths form a matric array and information is stored as the remanent state in a selected one of said first elements by coincident currents on selected row and column wires. Polarized light is shown on the first elements and only those storing ONE so treat it that it can pass through the first analyser. Read-out is done by activating the said second elements to rotate the plane of polarization of light (if any) reaching them from the corresponding first analysers so that it will pass through the second analysers. Each row of second elements, together with inductances, forms a transmission line (Fig. 4, not shown) and the elements of a row are activated in turn by pulsing the appropriate transmission line. Temperature control may be provided to ensure the first elements display electro-optic remanence and the second elements do not. A second similar memory may be provided storing clock pulses, the two memories being in the same environment and read out together, so that the second can time the first. The stored information may be restored periodically.
Patent GB-1031220-A (GB)
Title: Improvements relating to protection systems for braking apparatus
Inventor: SIMMONS ARTHUR WILLIAM
IPC: B60T17/20
Filed: 1963-10-09
Abstract: 1,031,220. Fluid pressure control of brakes. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Sept. 17, 1964 [Oct. 9, 1963], No. 39793/63. Heading F2F. In a fluid-operable braking apparatus having an automatic control device, brake application means and a main reservoir, a venting valve is provided in the connection between the brake application means and the control device whereby the venting valve being controlled by the main reservoir so that whilst pressure is maintained in the reservoir flow between the control device and application means is unimpeded, but when the pressure falls to a predetermined limit the valve closes the connection between control device and application means and vents the brake application means to apply the brakes. A dead-man or vigilance control device (not shown) is connected to a brake application valve 30 through passages 1A, 1B, 1E controlled by a valve 4 normally held open by the action of main reservoir pressure on diaphragm 33. When the pressure in passages 1B, 1C, 1E falls due to operation of the control device, the valves 13, 15 of the application valve respectively open and close to allow the application timing reservoir 20 to exhaust to atmosphere through chokes 23, 42 and the piston 17 to rise to vent the brake pipe BP to atmosphere by way of valve 18 and thus apply the brakes. The cut-off valve 9 also closes to prevent the reservoir MR from charging the brake pipe by way of the driver's valve. The choke 42 is controlled by a magnet valve 24. Should the main reservoir pressure fall when the system is otherwise inoperative the diaphragm 33 is moved by spring 3 to close valve 4 and open passages 1B, 1E to atmosphere through the valve rod 6, the fall in pressure in these valves applying the brakes as before.